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A forensic technician collects biological material from a pipe bomb. A new handbook from NIST and the National Institute of Justice provides state-of-the-art guidelines and best practices for storing, preserving and tracking biological evidence such as this. A pipe bomb is an improvised explosive device, a tightly sealed section of pipe filled with an explosive material. The containment provided by the pipe means that simple low explosives can be used to produce a relatively large explosion, and the fragmentation of the pipe itself creates potentially lethal shrapnel. Real evidence, material evidence or physical evidence is any material object, that plays some actual role in the matter that gave rise to the litigation, introduced in a trial, intended to prove a fact in issue based on its demonstrable physical characteristics.
